Products

SIG556 ER

DescriptionSpecificationDownload PDFFind Dealer

SIG556® ER features a 16” military grade cold hammer forged barrel, chambered in 5.56mm NATO, with a twist rate of 1 in 7”. The flash suppressor uses a standard .5 x 28 TPI thread pattern, ensuring compatibility with after-market accessories. The forearm housing the gas operating system is a vented non-slip polymer featuring the SIG TriRail design with three integrated Picatinny rails for mounting accessories. The optional flip up front combat sight is adjustable for windage and elevation. The Picatinny rail equipped receiver is made of high strength steel with a durable wear-resistant Nitron® finish. The Picatinny rail features an optional flip up rear sight that works in concert with the optional front combat sight, providing iron sight performance and a back up sight option for optics. The trigger housing is machined from an aircraft grade aluminum alloy forging with a hard-coat anodized finish designed to survive extreme conditions. The rifle comes equipped with a smooth two-stage trigger, ambidextrous safety and is designed to accept standard AR magazines. A 30-round magazine is supplied with each rifle. The collapsible buttstock features a rubber butt pad, multiple sling attachment points, and a waterproof battery compartment. The ergonomically designed pistol grip features an integrated storage compartment. Select versions feature a folding stock with the ability to collapse, providing the best of both worlds.

Specifications are subject to change.

Item Number

SIG556003

Caliber

5.56 x .45mm NATO

Action Type

Semi-auto

Overall Length

37.0 In

length w/Stock Folded

27.1

Stock Type

M4 Style

Stock Style

Collapsible or Collapsible/Folding

Barrel Type

Cold Hammer Forged

Flash Suppressor

A2 Style (.5x28TPI)

Forearm

Polymer

Weight w/out Mag

7.8 lbs

Operating System

Full Length Gas Piston, Rotating Bolt

MSRP

$1,793.00

CA Compliant

No

MA Compliant

No

Specifications are subject to change.

In order to view and print PDF files on your computer, you must have a PDF reader program installed. If you do not already have such a reader, you can visit Adobe's download page.